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SqlAnywhereSymmetricDialect.java
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SqlAnywhereSymmetricDialect.java
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/**
* Licensed to JumpMind Inc under one or more contributor
* license agreements. See the NOTICE file distributed
* with this work for additional information regarding
* copyright ownership. JumpMind Inc licenses this file
* to you under the GNU General Public License, version 3.0 (GPLv3)
* (the "License"); you may not use this file except in compliance
* with the License.
*
* You should have received a copy of the GNU General Public License,
* version 3.0 (GPLv3) along with this library; if not, see
* <http://www.gnu.org/licenses/>.
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.jumpmind.symmetric.db.sqlanywhere;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import org.jumpmind.db.model.Table;
import org.jumpmind.db.platform.IDatabasePlatform;
import org.jumpmind.db.sql.IConnectionCallback;
import org.jumpmind.db.sql.ISqlTransaction;
import org.jumpmind.db.sql.JdbcSqlTemplate;
import org.jumpmind.db.sql.JdbcSqlTransaction;
import org.jumpmind.db.sql.SqlException;
import org.jumpmind.db.util.BinaryEncoding;
import org.jumpmind.symmetric.common.ParameterConstants;
import org.jumpmind.symmetric.db.AbstractSymmetricDialect;
import org.jumpmind.symmetric.db.ISymmetricDialect;
import org.jumpmind.symmetric.model.Trigger;
import org.jumpmind.symmetric.service.IParameterService;
import org.jumpmind.symmetric.util.SymmetricUtils;
/*
* Sybase dialect was tested with jconn4 JDBC driver.
*/
public class SqlAnywhereSymmetricDialect extends AbstractSymmetricDialect implements ISymmetricDialect {
static final String SQL_DROP_FUNCTION = "drop function $(defaultSchema).$(functionName)";
static final String SQL_FUNCTION_INSTALLED = "select count(object_name(object_id('$(functionName)')))";
static final String SYNC_TRIGGERS_DISABLED = "sync_triggers_disabled";
static final String SYNC_NODE_DISABLED = "sync_node_disabled";
public SqlAnywhereSymmetricDialect(IParameterService parameterService, IDatabasePlatform platform) {
super(parameterService, platform);
this.triggerTemplate = new SqlAnywhereTriggerTemplate(this);
}
@Override
public void createRequiredDatabaseObjects() {
String triggersDisabled = this.parameterService.getTablePrefix() + "_" + "triggers_disabled";
if (!installed(SQL_FUNCTION_INSTALLED, triggersDisabled)) {
String sql = "create function $(defaultSchema).$(functionName)(@unused smallint) returns smallint as "
+
" begin "
+
" declare @ret smallint" +
" select @ret=0 " +
" begin " +
" if varexists('" + SYNC_TRIGGERS_DISABLED + "') = 1 " +
" select " + SYNC_TRIGGERS_DISABLED + " into @ret " +
" end " +
" return @ret "
+
" end ";
System.out.println("install triggers_disabled: " + sql);
install(sql, triggersDisabled);
}
String nodeDisabled = this.parameterService.getTablePrefix() + "_" + "node_disabled";
if (!installed(SQL_FUNCTION_INSTALLED, nodeDisabled)) {
String sql = "create function $(defaultSchema).$(functionName)(@unused smallint) returns varchar(50) as "
+
" begin "
+
" declare @ret varchar(50) " +
" begin " +
" if varexists('" + SYNC_NODE_DISABLED + "') = 1 " +
" select " + SYNC_NODE_DISABLED + " into @ret " +
" end " +
" return @ret "
+
" end ";
install(sql, nodeDisabled);
}
String txId = this.parameterService.getTablePrefix() + "_" + "txid";
if (!installed(SQL_FUNCTION_INSTALLED, txId)) {
String sql = "create function $(defaultSchema).$(functionName)(@unused smallint) returns varchar(50) as "
+
" begin "
+
" declare @txid varchar(50) "
+
" if (connection_property ('TransactionStartTime') is not null and " +
" connection_property ('TransactionStartTime') <> '' ) begin "
+
" select @txid = connection_property ('TransactionStartTime') + ' ' + CONNECTION_PROPERTY( 'number' ) "
+
" end "
+
" return @txid "
+
" end ";
install(sql, txId);
}
}
@Override
public void dropRequiredDatabaseObjects() {
String encode = this.parameterService.getTablePrefix() + "_" + "base64_encode";
if (installed(SQL_FUNCTION_INSTALLED, encode)) {
uninstall(SQL_DROP_FUNCTION, encode);
}
String triggersDisabled = this.parameterService.getTablePrefix() + "_" + "triggers_disabled";
if (installed(SQL_FUNCTION_INSTALLED, triggersDisabled)) {
uninstall(SQL_DROP_FUNCTION, triggersDisabled);
}
String nodeDisabled = this.parameterService.getTablePrefix() + "_" + "node_disabled";
if (installed(SQL_FUNCTION_INSTALLED, nodeDisabled)) {
uninstall(SQL_DROP_FUNCTION, nodeDisabled);
}
String txId = this.parameterService.getTablePrefix() + "_" + "txid";
if (installed(SQL_FUNCTION_INSTALLED, txId)) {
uninstall(SQL_DROP_FUNCTION, txId);
}
}
@Override
public void removeTrigger(StringBuilder sqlBuffer, final String catalogName, String schemaName,
final String triggerName, String tableName, ISqlTransaction transaction) {
schemaName = schemaName == null ? "" : (schemaName + ".");
final String sql = "drop trigger " + Table.getFullyQualifiedTableName(catalogName, schemaName, tableName) + "." + triggerName;
logSql(sql, sqlBuffer);
if (parameterService.is(ParameterConstants.AUTO_SYNC_TRIGGERS)) {
log.info("Dropping {} trigger for {}", triggerName, Table.getFullyQualifiedTableName(catalogName, schemaName, tableName));
((JdbcSqlTransaction) transaction)
.executeCallback(new IConnectionCallback<Boolean>() {
public Boolean execute(Connection con) throws SQLException {
String previousCatalog = con.getCatalog();
Statement stmt = null;
try {
if (catalogName != null) {
con.setCatalog(catalogName);
}
stmt = con.createStatement();
stmt.execute(sql);
} catch (Exception e) {
log.warn("Error removing {}: {}", triggerName, e.getMessage());
throw e;
} finally {
if (catalogName != null) {
con.setCatalog(previousCatalog);
}
try {
stmt.close();
} catch (Exception e) {
}
}
return Boolean.FALSE;
}
});
}
}
@Override
protected String switchCatalogForTriggerInstall(String catalog, ISqlTransaction transaction) {
if (catalog != null) {
Connection c = ((JdbcSqlTransaction) transaction).getConnection();
String previousCatalog;
try {
previousCatalog = c.getCatalog();
c.setCatalog(catalog);
return previousCatalog;
} catch (SQLException e) {
throw new SqlException(e);
}
} else {
return null;
}
}
@Override
public BinaryEncoding getBinaryEncoding() {
return BinaryEncoding.BASE64;
}
@Override
protected boolean doesTriggerExistOnPlatform(final String catalogName, String schema, String tableName,
final String triggerName) {
return ((JdbcSqlTemplate) platform.getSqlTemplate())
.execute(new IConnectionCallback<Boolean>() {
public Boolean execute(Connection con) throws SQLException {
String previousCatalog = con.getCatalog();
PreparedStatement stmt = con
.prepareStatement("select count(*) from dbo.sysobjects where type = 'TR' AND name = ?");
try {
if (catalogName != null) {
con.setCatalog(catalogName);
}
stmt.setString(1, triggerName);
ResultSet rs = stmt.executeQuery();
if (rs.next()) {
int count = rs.getInt(1);
return count > 0;
}
} finally {
if (catalogName != null) {
con.setCatalog(previousCatalog);
}
stmt.close();
}
return Boolean.FALSE;
}
});
}
public void disableSyncTriggers(ISqlTransaction transaction, String nodeId) {
transaction.prepareAndExecute("IF VAREXISTS('" + SYNC_TRIGGERS_DISABLED + "')=1 " +
"THEN drop variable " + SYNC_TRIGGERS_DISABLED + " " +
"END IF;" +
"create variable " + SYNC_TRIGGERS_DISABLED + " smallint;" +
"set " + SYNC_TRIGGERS_DISABLED + "=1;");
transaction.prepareAndExecute("IF VAREXISTS('" + SYNC_NODE_DISABLED + "')=1 " +
"THEN drop variable " + SYNC_NODE_DISABLED + " " +
"END IF;" +
"create variable " + SYNC_NODE_DISABLED + " varchar(50);");
if (nodeId != null) {
transaction.prepareAndExecute("set " + SYNC_NODE_DISABLED + " = '" + nodeId + "'");
}
}
public void enableSyncTriggers(ISqlTransaction transaction) {
transaction.prepareAndExecute("IF VAREXISTS('" + SYNC_TRIGGERS_DISABLED + "')=1 " +
"THEN drop variable " + SYNC_TRIGGERS_DISABLED + " " +
"END IF;" +
"create variable " + SYNC_TRIGGERS_DISABLED + " smallint;" +
"set " + SYNC_TRIGGERS_DISABLED + "= 0;");
transaction.prepareAndExecute("IF VAREXISTS('" + SYNC_NODE_DISABLED + "')=1 " +
"THEN drop variable " + SYNC_NODE_DISABLED + " " +
"END IF;" +
"create variable " + SYNC_NODE_DISABLED + " varchar(50);");
}
public String getSyncTriggersExpression() {
return SymmetricUtils.quote(this, platform.getDefaultCatalog()) +
".$(defaultSchema)" +
parameterService.getTablePrefix() + "_triggers_disabled(0) = 0";
}
@Override
public String getTransactionTriggerExpression(String defaultCatalog, String defaultSchema, Trigger trigger) {
return SymmetricUtils.quote(this, platform.getDefaultCatalog()) +
".$(defaultSchema)" +
parameterService.getTablePrefix() + "_txid(0)";
}
@Override
public boolean supportsTransactionId() {
return true;
}
@Override
public boolean isTransactionIdOverrideSupported() {
return false;
}
public void cleanDatabase() {
}
public boolean needsToSelectLobData() {
return true;
}
}